How to generate a synthetic data similar to the real image
Here is a basic answer for such a broad question...

Since you say detail doesn't quite matter, you may find something like this interesting. for this approach I used meta spheres, and then  converted it over to a mesh.

Just so I steer clear of any trouble, here are is my source of the image used:
Pixabay Image Reference

Here are the results, and the Blend File:





Blend File: